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A platform for research: civil engineering, architecture and urbanism
Non-destructive and Destructive Tests to Drive Corrective Intervention Procedure of Concrete Elements
This work presents the results of an extensive non-destructive and destructive experimental campaign performed on thirty concrete columns of a 10 multi-storey residential building located in Paraíba, Brazil, built about 30 years ago, to assess the concrete quality to decide the need for retrofitting works. Ultrasound measurements, electrical resistivity, the corrosion potential of the reinforcements, depth of the carbonation front, void index, compressive strength, and capillarity absorption tests were performed. Results indicated the occurrence of corrosion of reinforcement, low concrete compressive strength, unappropriated reinforcement covering, and water absorption level close to 17% void index of about 31%. Tests in drilled concrete cores extracted corroborated the non-destructive test results with average compressive strength significantly low close to 12 MPa, a value significantly lower than the design characteristic strength, i.e., 20 MPa. The joint realization of non-destructive and destructive tests proved to be an efficient strategy for obtaining relevant information for the diagnosis of pathologies in reinforced concrete elements.
Non-destructive and Destructive Tests to Drive Corrective Intervention Procedure of Concrete Elements
This work presents the results of an extensive non-destructive and destructive experimental campaign performed on thirty concrete columns of a 10 multi-storey residential building located in Paraíba, Brazil, built about 30 years ago, to assess the concrete quality to decide the need for retrofitting works. Ultrasound measurements, electrical resistivity, the corrosion potential of the reinforcements, depth of the carbonation front, void index, compressive strength, and capillarity absorption tests were performed. Results indicated the occurrence of corrosion of reinforcement, low concrete compressive strength, unappropriated reinforcement covering, and water absorption level close to 17% void index of about 31%. Tests in drilled concrete cores extracted corroborated the non-destructive test results with average compressive strength significantly low close to 12 MPa, a value significantly lower than the design characteristic strength, i.e., 20 MPa. The joint realization of non-destructive and destructive tests proved to be an efficient strategy for obtaining relevant information for the diagnosis of pathologies in reinforced concrete elements.
Non-destructive and Destructive Tests to Drive Corrective Intervention Procedure of Concrete Elements
Building Pathology
Delgado, J. M. P. Q. (editor) / Azevedo, A. C. (author) / Lemos, S. (author) / Delgado, J. M. P. Q. (author) / Silva, F. A. N. (author) / Sousa, C. A. P. (author)
Building Pathologies: Experimental Campaigns and Numerical Procedures ; Chapter: 5 ; 117-128
2023-03-02
12 pages
Article/Chapter (Book)
Electronic Resource
English
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